The effects of promoters of K and Zr on the mesoporous carbon supported cobalt catalysts for Fischer-Tropsch synthesis.
The effects of promoters of K and Zr on the mesoporous carbon supported cobalt catalysts for Fischer-Tropsch synthesis.
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DOI：
10.1016/j.jcis.2011.11.030
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发表时间：
2012-02
影响因子：
9.9
通讯作者：
Liang-Fu Chen;Guoxia Song;Yuchuan Fu;Jianyi Shen
中科院分区：
文献类型：
--
作者：
Liang-Fu Chen;Guoxia Song;Yuchuan Fu;Jianyi Shen
The mesoporous carbon supported cobalt catalyst (15%Co/MC) was found to be more active and selective to C5+than the traditionally activated carbon supported one (15%Co/AC) for the Fischer–Tropsch synthesis (FTS). The addition of small amount of K2O and ZrO2significantly affected the FTS behavior of 15%Co/MC. The addition of 1% K inhibited the FTS activity dramatically, while the addition of 3% Zr increased the FTS activity significantly. The addition of K2O decreased the surface acidity while increased the surface basicity of 15%Co/MC, resulting in the increased heat of adsorption of CO and substantially decreased heat of adsorption of H2on Co. In contrast, the addition of ZrO2increased the surface acidity and heat of adsorption of H2on Co. The FTS activity was found to be related to the ratio of heats for the adsorption of CO and H2on the catalysts 15%Co/MC, 15%Co–1%K/MC and 15%Co–3%Zr/MC. The highest FTS activity was obtained on the catalyst with the heat ratio of 1.2.
